Highly photon-loss-tolerant quantum computing using hybrid qubits

Title
Highly photon-loss-tolerant quantum computing using hybrid qubits
Authors
이승우S OmkarY. S. Teo정현석
Keywords
Quantum Computing; Optical Hybrid Qubit; Photon
Issue Date
2021-03
Publisher
Physical review. A
Citation
VOL 103, 032602
Abstract
We investigate a scheme for topological quantum computing using optical hybrid qubits and make an extensive comparison with previous all-optical schemes. We show that the photon loss threshold reported by Omkar et al. [Phys. Rev. Lett. 125, 060501 (2020)] can be improved further by employing postselection and multi-Bellstate-measurement-based entangling operations to create a special cluster state, known as Raussendorf lattice for topological quantum computation. In particular, the photon loss threshold is enhanced up to 5.7 × 10-3, which is the highest reported value given a reasonable error model. This improvement is obtained at the price of consuming more resources by an order of magnitude compared with the scheme in the aforementioned reference. Nevertheless, this scheme remains resource-efficient compared with other known optical schemes for faulttolerant quantum computation.
URI
http://pubs.kist.re.kr/handle/201004/72983
ISSN
2469-9926
Appears in Collections:
KIST Publication > Article
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